Urinary Tract Malformation and Infection with Hyperkalemia and Decreased Fractional Excretion of Potassium in an Infant

Takeshi Asano; Masanori Abe; Makiko Asai; Taiyoh Imai; Mitsuhiro Kamisago; Kentaroh Kuwabara; Mizue Nakajima; Mutsumi Murakami; Osamu Fujino

doi:10.1272/jnms.73.289

Case Reports

Urinary Tract Malformation and Infection with Hyperkalemia and Decreased Fractional Excretion of Potassium in an Infant

Takeshi Asano, Masanori Abe, Makiko Asai, Taiyoh Imai, Mitsuhiro Kamisago, Kentaroh Kuwabara, Mizue Nakajima, Mutsumi Murakami, Osamu Fujino

Author information

Takeshi Asano
Department of Pediatrics, Nippon Medical School Graduate School of Medicine
Department of Pediatrics, Chiba-Hokusoh Hospital, Nippon Medical School
Masanori Abe
Department of Pediatrics, Nippon Medical School Graduate School of Medicine
Department of Pediatrics, Chiba-Hokusoh Hospital, Nippon Medical School
Makiko Asai
Department of Pediatrics, Nippon Medical School Graduate School of Medicine
Department of Pediatrics, Chiba-Hokusoh Hospital, Nippon Medical School
Taiyoh Imai
Department of Pediatrics, Nippon Medical School Graduate School of Medicine
Department of Pediatrics, Chiba-Hokusoh Hospital, Nippon Medical School
Mitsuhiro Kamisago
Department of Pediatrics, Nippon Medical School Graduate School of Medicine
Department of Pediatrics, Chiba-Hokusoh Hospital, Nippon Medical School
Kentaroh Kuwabara
Department of Pediatrics, Nippon Medical School Graduate School of Medicine
Department of Pediatrics, Chiba-Hokusoh Hospital, Nippon Medical School
Mizue Nakajima
Department of Pediatrics, Nippon Medical School Graduate School of Medicine
Department of Pediatrics, Chiba-Hokusoh Hospital, Nippon Medical School
Mutsumi Murakami
Department of Pediatrics, Nippon Medical School Graduate School of Medicine
Department of Pediatrics, Chiba-Hokusoh Hospital, Nippon Medical School
Osamu Fujino
Department of Pediatrics, Nippon Medical School Graduate School of Medicine
Department of Pediatrics, Chiba-Hokusoh Hospital, Nippon Medical School

Keywords: Pseudohypoaldosteronism, infant, urinary tract infection, urinary tract malformation, hypokalemia

JOURNAL FREE ACCESS

2006 Volume 73 Issue 5 Pages 289-291

DOI https://doi.org/10.1272/jnms.73.289

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Abstract

We describe an uncircumcised male infant treated for urinary tract infection who exhibited multiple hormonal and electrolyte abnormalities consistent with a diagnosis of transient pseudohypoaldosteronism. Successful treatment of the urinary tract infection was accompanied by the resolution of all hormonal and electrolyte abnormalities, including hyperaldosteronemia, hyperreninemia, hyponatremia and hyperkalemia. Radiographic examination revealed marked left dilatation of the renal pelvis and hydroureter but no vesicoureteral reflux. Owing to the possibilities of future renal scarring, decreased renal function, and hypertension, evaluation of urinary tract malformation and appropriate hormonal studies should be performed in infants with urinary tract infection and hyperkalemia.

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